JP3246924B2 - Train position detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train position detecting device, and more particularly to a train position detecting device which can accurately detect a train position by a communication method using an interrogator and a transponder, thereby contributing to shortening a train operation interval. About.

[0002]

2. Description of the Related Art Conventionally, as a device for detecting a train position by a communication method using an interrogator and a transponder,
The one shown in FIG. 3 is known. That is, the train T
Transponders Ah and Ar are provided at the beginning or at the beginning and at the end of the train, and interrogators It are arranged on the ground at an interval 1 slightly larger than the train length. When passing over the interrogator It, the transponder Ah sends the train number to the ground in response to a query from the interrogator It, and on the ground, determines the location of the specific train based on the received train number. Detected. In the case where the transponders Ah and Ar are provided at the head and the tail, when the train number is received from the head of the train, a certain block section TR ₂ is received.
Entry into, and detect each advance from block section TR ₁ of the previous by the reception from the tail.

[0003]

In recent years, it has been desired to shorten the train operation interval in order to increase the amount of transportation, but in order to realize this, the train position detection accuracy must be reduced. It has been required to detect a very short unit, for example, 10 m or less.

Certainly, in the above-described conventional apparatus, if the interrogator is installed at intervals of 10 m or less, the train position can be detected in units of the installation interval. However, the number of interrogators increases and the equipment cost increases. Bulk is not realistic.

Accordingly, the present invention has been made to solve the above problems, and its object is to reduce the cost.
Another object of the present invention is to provide a train position detecting device capable of detecting a train position with high accuracy.

[0006]

In order to achieve the above object, the present invention provides an interrogator provided on one side of the ground with a line interposed between the interrogator and the other of the ground interposed with the line facing the interrogator. A check transponder provided on the side, and provided at a predetermined interval on a side surface on the interrogator side of a train passing on the track ,
Information identifying the train and the location of the train
The transponder group in which distance information indicating whether or not the transponder has been stored is stored , and instead of receiving a response signal from the check transponder based on an interrogator and an interrogator based on an interrogator sent to the check transponder, upon receiving a response signal from the transponder group, a position detecting means for detecting the train position mounted with the transponder group based on communication with the transponder of the transponder group, the interrogator said
Checking transponder and said transponder
When the response signal is no longer received from the train,
Determining means for determining that an abnormality has occurred in the position detection function . The transponder for checking and the transponder group are driven by receiving a power wave from the interrogator.

[0007]

In the above configuration, the transponder for checking and each transponder of the transponder group are driven when receiving a power wave from the interrogator. And
When the position detecting means receives a response signal from the transponder group instead of receiving a response signal from the check transponder based on an interrogator sent to the check transponder, The position of the train equipped with the transponder group is detected based on the communication with.
Also, the determination means is that the
Response signals from both the spawner and transponder
When reception stops, there is an error in the train position detection function
It is determined that an error has occurred.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an apparatus according to an embodiment, which is shown as a plan view near a platform H of a certain station.

[0009] a ₁ ~a _n is an interrogator, at predetermined intervals on one side of the ground across the line R (the right side in the traveling direction line train in the illustrated example), preferably slightly shorter than the train length It is installed at intervals equal to the length. And
On the ground that face across the line R of the interrogator a ₁ ~a _n, transponder b ₁ ~b _n for each check
Are installed respectively.

[0010] c is a group of transponders, each train T
₁ , T ₂ (only two trains are shown in this example, but the other trains are also the same).
The transponder group c is configured equidistantly disposed a plurality of transponders c ₁ to c _n in each car of each train T _1, T _2. Therefore, for example, one vehicle length is 20 m
In this case, when four transponders are provided in one vehicle, the transponders are provided at intervals of 5 m. Each of the transponders c _{1 to} c _n stores in advance distance information from the head and tail of the train to the transponder in addition to the information of the number specifying the train. sand
That is, each transponder c _{1 to} c _n specifies a train.
Information on where the train is located
Are stored in advance.

[0011] In the figure, 10 is to drive control each interrogator a ₁ ~a _n at the ground station, and a position detector 11 for detecting the position of the train in response to a signal from the interrogator a ₁ ~a _n, The train position information from the position detector 11 is input to generate control signals for the trains T ₁ and T ₂ ,
And a train controller 12 for transmitting the control signal to each of the trains T ₁ and T ₂ via the track circuits TR _{1 to} TR _n .

FIG. 2 is a block diagram showing the electrical configuration of the apparatus according to the embodiment. Each interrogator a ₁ ~a _n, each transponder c ₁ to c _n of each check for a transponder b ₁ ~b _n and transponder group c is because each the same configuration, here, the interrogator a _1, check transponder b ₁ and transponder the c ₁ is shown as an example.

The interrogator a ₁ is composed of a well-known interrogator, and outputs a first loop coil 20 for transmitting an interrogation signal (mode pulse) also serving as a power wave and a response signal (code) from the transponder b ₁ or c ₁ for checking. And a controller 23 that performs communication control between the antenna 22 including a second loop coil 21 for receiving the first pulse and a ground station 10.
Question transmitter 2 for generating a question signal to loop coil 20
4 and a response receiver 25 connected to the controller 23 and processing the response signal from the second loop coil 21.

The transponders b ₁ and c ₁ for checking are composed of well-known non-power-supply transponders. That is, these transponders b
₁ and c ₁ are first loop coils 30 and 40 for receiving an interrogator a ₁ interrogation signal and interrogator a
₁ , a second loop coil 31 for sending a response signal,
And rectifiers 33 and 4 for rectifying signals received by the first loop coils 30 and 40.
3 and a response transmitter 34 which is driven by currents from the rectifiers 33 and 43 and outputs response signals prepared for each of the transponders b _{1 to} b _n and c _{1 to} c _n to the second loop coils 31 and 41 in advance. , 44. Note that the transponder c _1, as described above, the distance information from the head portion and the tail of the train T ₁ to the transponder c ₁ is stored, during the response signal from the transponder c _1, This distance information is included in addition to the train number information.

Next, a train position detecting operation of the apparatus of the embodiment will be described. First, the case where there is no train T ₁ (or T ₂ ) between the interrogator a ₁ and the transponder b ₁ for checking will be described. In this case, when the interrogation signal from the interrogator a ₁ is sent to check the transponder b ₁ via the antenna 22, the interrogation signal response transmitter 34 is received by the antenna 32 is driven. Therefore, predetermined response signal is sent towards the interrogator a ₁ from check transponder b _1.

[0016] There is interrogators a ₁ and check the transponder b train T ₁ between ₁ (or T _2), and the interrogator a ₁ and the transponder c ₁ is when opposing the check transponder b ₁ above Interrogation and response signals are exchanged in the same manner as between the two. That is, when the interrogator a ₁ sends an interrogator signal to the transponder c ₁ via the antenna 22, the interrogator a ₁ receives the interrogator signal and the response transmitter 44 is driven. Therefore, from the transponder c _1, the response signal is sent towards the interrogator a _1. Such communication is performed by other transponders c ₂ -c _n
There is performed for each facing the interrogator a _1.

[0017] Each interrogator a ₁ ~a _n becomes a possible to alternatively receive a response signal from the transponder c ₁ to c _n provided in the response signal and trains from check transponder b ₁ ~b _n opposed in the case of this alternative reception malfunction, it can mean that a problem occurs in the interrogator a ₁ ~a _n or check transponder b ₁ ~b _n, thereby detecting an abnormality of the detection function. In other words, the door for checking interrogator a ₁ ~a _n
Ransponders b _{1 to} b _n and transponders c _{1 to} c _n
When a predetermined response signal is not received from any of
In the meantime, the ground station 10 detects an abnormality in the train position detecting function.
Is determined. In addition, check transponder b ₁
~b _n and each transponder c ₁ to c _n are set to non-powered, may of course independently be Available Power supply type having a power supply.

When the trains T ₁ and T ₂ are in the positional relationship shown in FIG. 1, the interrogators a ₁ and a ₃ communicate with the check transponders b ₁ and b ₃ , respectively. a ₂ and an _-1 are the trains T ₁ ,
Each transponders group c in T ₂ is in the communication status.

The positions of the trains T ₁ and T _n are detected based on the number of transponders in the transponder group c which the interrogators a ₂ and a _n-1 have communicated with. That is,
Since the installation position of the interrogator a ₁ ~a _n is input to the position detector 11 as known data, the head portion and the tail portion of each train T ₁ through T ₂ each interrogator a ₁ ~a _n as the reference position Is required.

For example, assuming that the train T ₁ is a vehicle having a length of 20 m and a 10-car train, and four transponders are installed at equal intervals for each vehicle,
Interrogator a ₂ is the 200th transponder c
When you communicate with _200, the head of the train T ₁ is in the 100m ahead installation position of the interrogator a _2, the tail 1
It is detected that it is located at a position before 00 m, and the detection error is plus or minus 5 m. Similarly, the train position is detected in the subsequent train T ₂ also based on the interrogator a _n-1.

The detected position information of each train is transmitted to each train and used. That train position information detected is transmitted from the train controller 12 to each track circuit TR ₁ to Tr _n, each train can be received through the track circuit which the train is located. Incoming train information to other position information of the preceding train, the position information of the train but also is capable of receiving, the interrogator a ₁ ~a _n and check the transponder b ₁ ~b _n is only the vicinity of the station If it is installed and its own train position information cannot be obtained using these, the own train position is detected by a well-known own train position detecting device, for example, a tachogenerator installed in the own train.

[0022] In this embodiment apparatus, ± the tail position of the preceding train located near the station (here, the train T ₁₎ 5
is detected in m of accuracy, also because the the train (here and the train T ₂₎ position is also known, the train T ₂ are becomes possible to run by setting the traveling speed pattern.

This traveling speed pattern is an operation system in which a target stop point of a train is determined, and the train is operated as fast as possible within a range where the train can be stopped at the target stop point. Therefore,
The train T ₂ are, the best signal aspect to an acceptable rate of tail of preceding train T ₁ as the stop target point may be operated with up can be a driving short for Toki隔.

[0024] As described above, the present embodiment apparatus, between the interrogator a ₁ ~a _n and check transponder b ₁ ~b _n provided by sandwiching the line R, and the interrogator a ₁ ~a _n and trains since to be able to communicate with each transponder c ₁ to c _n transponder group c provided, the communication between the interrogator a ₁ ~a _n and check transponder b ₁ ~b _n, interrogator a ₁
The communication between the transponder c ₁ to c _n from when behalf of communication with ~a _n and each transponder c ₁ to c _n can be detected train position, the detection accuracy of each transponder c ₁ to c _n It is a unit of the installation interval, and can be detected with a detection accuracy of, for example, 10 m or less. Further, the transponders b _{1 to} b _n for checking and the transponders c _{1 to} c _n of the transponder group c are of a non-power supply type, so that they can be manufactured at low cost.

[0025]

【The invention's effect】 The device of the present invention is provided with the line interposed.
Between the interrogator and the transponder for checking,
And transponders installed on trains and interrogators
Communication with the transponder of
Communication between interrogator and check transponder
Replaces the interrogator with each transponder.
Communication with the transponder from
Can be detected, and the detection accuracy is as simple as the transponder installation interval.
Position, for example, with a detection accuracy of 10 m or less.
Can be. In addition, the interrogator is
Response signals from both the spawner and transponder
When reception stops, there is an error in the train position detection function
The train position detection device with excellent reliability
Can be placed. Check transponder
And no transponders in the transponder group
Then, it can be manufactured at low cost.

[0026]

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration.

FIG. 3 is a schematic configuration diagram of a conventional device.

[Explanation of symbols]

a ₁ ~a _n interrogator b ₁ ~b _n check Transponder c transponder group c ₁ to c _n transponder T _1, T ₂ trains

Claims (2)

(57) [Claims] 1. An interrogator provided on one side of the ground with a line interposed therebetween, a check transponder provided on the other side of the ground with the line opposed to the interrogator, and a train passing on the line Is provided at a predetermined interval on the side surface on the interrogator side to identify the train
Shows information and where it is located on the train
A transponder group in which distance information is stored, and a response signal from the transponder group is received instead of receiving a response signal from the check transponder based on an interrogator sent from the interrogator to the check transponder. At this time, position detecting means for detecting the position of the train equipped with the transponder group based on communication with each transponder of the transponder group, and the interrogator includes the transponder for checking and
And a response signal from any of the transponders
When the train disappears, an error occurs in the train position detection function.
And a determining means for determining that the train position has been reached. 2. The train position detecting device according to claim 1, wherein the transponder for checking and the group of transponders are driven by receiving a power wave from an interrogator.